Bumjun Kim

Bumjun Kim

Ph.D. Student in Artificial Intelligence
Yonsei University
Artificial Intelligence & Information Systems Laboratory (AI-ISL)
Advisor: Prof. Albert No

I am a Ph.D. student in Artificial Intelligence at Yonsei University, advised by Prof. Albert No in the Artificial Intelligence & Information Systems Laboratory.

My research focuses on diffusion language models and generative models, with an interest in understanding how these models learn, inference, and can be made more reliable. I strive to look beyond routine directions, explore new possibilities, and pursue research that is explainable, interpretable, and easy to understand.

selected publications

(*) denotes equal contribution, (†) denotes corresponding author.

  1. ICML
    Dependency-Aware Parallel Decoding via Attention for Diffusion LLMs
    Bumjun Kim*, Dongjae Jeon*, Moongyu Jeon, and Albert No
    In the International Conference on Machine Learning, 2026.

    Parallel decoding for diffusion LLMs using attention-derived dependency structure.

  2. ICLR
    Rainbow Padding: Mitigating Early Termination in Instruction-Tuned Diffusion LLMs
    Bumjun Kim*, Dongjae Jeon*, Dueun Kim*, Wonje Jeung, and Albert No
    In the International Conference on Learning Representations, 2026.

    A method for reducing early termination in instruction-tuned diffusion language models.

  3. CVPRFindings
    Memorization In Stable Diffusion Is Unexpectedly Driven by CLIP Embeddings
    Bumjun Kim and Albert No
    In the IEEE/CVF Conference on Computer Vision and Pattern Recognition, 2026 Findings.

    An analysis of Stable Diffusion memorization that identifies CLIP embeddings as a key driver.

  4. arXiv
    Understanding the Reversal Curse Mitigation in Masked Diffusion Models through Attention and Training Dynamics
    Sangwoo Shin, Bumjun Kim, Kyelim Lee, Moongyu Jeon, and Albert No
    arXiv, 2026.

    A study of attention and training dynamics behind reversal-curse mitigation in masked diffusion models.

education

Yonsei University
Ph.D. in Artificial Intelligence, Mar 2025 - Present · Seoul, Korea
GPA: 4.25/4.30
Hongik University
B.S. in Computer Engineering, Mar 2018 - Feb 2025 · Seoul, Korea
GPA: 3.89/4.50

research experience

Ph.D. Researcher, AI-ISL
Yonsei University, Mar 2025 - Present · Advisor: Prof. Albert No
Research on diffusion language models, early termination mitigation, dependency-aware decoding, and reversal-curse behavior.
Undergraduate Researcher, AI-ISL
Jul 2023 - Feb 2025 · Advisor: Prof. Albert No
Studied memorization in image diffusion models and built analysis pipelines for privacy experiments across Stable Diffusion variants.

honors & awards